Siemens SIMOTICS S-1FK2, Operating Instructions Manual

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Variant B: Control via onboard terminals
The Basic Functions (STO, SS1) can be controlled via terminals.
The following connections are supported:
● Current sourcing/sinking F-DO of external devices
● Current sourcing/sourcing F-DO of external devices
● Self-monitoring sensors (OSSD)
● Non-self-monitoring sensors (e.g. emergency stop button)
The existing modules of external devices operate with different test pulses for the on/off test.
The debounce time is set in conjunction with the connected module. The debounce time
specifies the duration of an interference pulse at the F-DIs, which does not change the state
of the drive.
The signal states at the two terminals of an F-DI are monitored in order to determine whether
these have assumed the same logical state within the discrepancy time (unavoidable time
delay). The selection and deselection must be performed in both monitoring channels within
this discrepancy time.
The discrepancy time and the debounce time are pre-assigned default values and do not have
to be changed in most cases. See the following figure.
Figure 6-24 Parameterizing the controller via terminals
Commissioning and diagnostics in the Web server
6.8 Safety settings
SINAMICS S210 servo drive system
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Operating Instructions, 12/2017, A5E41702836B AA